1021021011011 has 2 divisors, whose sum is σ = 1021021011012. Its totient is φ = 1021021011010.

The previous prime is 1021021010969. The next prime is 1021021011013. The reversal of 1021021011011 is 1101101201201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1021021011011 - 2³⁸ = 746143104067 is a prime.

It is a Sophie Germain prime.

Together with 1021021011013, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1021021010983 and 1021021011001.

It is not a weakly prime, because it can be changed into another prime (1021021011013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510510505505 + 510510505506.

It is an arithmetic number, because the mean of its divisors is an integer number (510510505506).

Almost surely, 2^{1021021011011} is an apocalyptic number.

1021021011011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021021011011 is an equidigital number, since it uses as much as digits as its factorization.

1021021011011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1021021011011 its reverse (1101101201201), we get a palindrome (2122122212212).

The spelling of 1021021011011 in words is "one trillion, twenty-one billion, twenty-one million, eleven thousand, eleven".